Leptotyphlops macrorhynchus (Jan & Sordelli)

Published, First, 2007, A revision of the genus Leptotyphlops in northeastern Africa and southwestern Arabia (Serpentes: Leptotyphlopidae), Zootaxa 1408, pp. 1-78: 29-30

publication ID

1175­5334

persistent identifier

http://treatment.plazi.org/id/A77887C2-FFC1-FFE7-FF02-8462419BB20F

treatment provided by

Felipe

scientific name

Leptotyphlops macrorhynchus (Jan & Sordelli)
status

 

Leptotyphlops macrorhynchus (Jan & Sordelli)   ( Plate 9, Fig. 1)

Sudan beaked worm-snake

Stenostoma (Ramphostoma) macrorhynchum Jan & Sordelli, 1860   in 1860–1866, Icon. Gen. Ophid. 1: livr. 1, Pls. 5 & 6, fig. 12. Type locality: Sennar, Al Jazirah Province, Central Region, Sudan   GoogleMaps (13°32’N, 33°37’E, elevation 350 m), holotype destroyed by fire (formerly in MSNM).

Ramphostoma macrorhynchum   — Jan, 1861: 190, 1863: 16, 1864: 39.

Glauconia macrorhynchus   — Boulenger, 1890: 92, 1893: 61, 1915c: 643 (part), 1920: 299 (part); Werner, 1907: 42, 1917: 201 (part).

Glauconia fiechteri Scortecci, 1929   , Atti. Soc. Ital. Sci. Nat., Milano, 68: 266 (part), fig. (unnumbered). Type locality: Villabruzzi, Giohar, Somalia (02°46’N, 45°31’E, 100 m), lectotype, MSNM 582 (formerly MSNM 2032a), collected by U. Fiechter, 9 December 1928; Wallach & Lanza 2004: 85.

Leptotyphlops cairi   — Gans & Laurent, 1965: 49.

Leptotyphlops macrorhynchus   — Haas, 1959: 90, figs. 1–2; Villiers, 1975: 85 (part), figs. 107–108; Kramer & Schnurrenberger, 1963: 477, fig. 1; Corkill & Cochrane, 1966: 496; Lanza, 1972: 174; Hahn, 1978: 482; Arnold, 1980: 314, 1987: 253; Farag & Banaja, 1980: 13; Leviton & Aldrich, 1984: xxiv; Werner, 1982: 156 (part), 1987: 283 (part); Gallagher & Arnold, 1988: 411 (Mintirib); Leviton et al., 1992: 82 (part), pl. 13C; Meirte, 1992: 15, fig. 28; Largen & Rasmussen, 1993: 324; Schleich et al., 1996: 475 (part), pl. 41, fig. 117; Largen, 1997: 87; Sahel, 1997: 132, pl. 76; Schätti & Desvoignes, 1999: 78; Baha el Din, 2006: 221, figs. A–B [p. 223], pl. 82.

Leptotyphlops macrorhynchus macrorhynchus   — Villiers, 1950: 56 (part), figs. 54–55, 1963: 86 (part), figs. 92–93; Hahn, 1980: 20; Lanza, 1983: 220, 1990: 431; Schleich et al., 1996: 477 (part); Gasperetti, 1988: 200, fig. 14.

Leptotyphlops longicaudus, Hahn, 1980: 19   (part); Lanza, 1983: 220, 1990: 431.

Diagnosis. A member of the Leptotyphlops longicaudus   group, differing from L. longicaudus   in its strongly hooked snout and relatively shorter tail (total length/tail ratio 10.0–14.3 vs 5.7–11.0). It differs from L. cairi   in being unpigmented, having a beak, and a longer, thinner body. Skull with a large frontoparietal foramen like L. cairi   .

Description. Body cylindrical, with head and neck slightly broadened, the moderate tail tapers to a small blunt terminal cone.

Snout hooked in lateral view with distinct beak, rostral moderate (0.36–0.60 head width, mean = 0.50), much wider than nasals dorsally, not reaching level of eyes. Behind rostral, upper lip bordered by infranasal (nostril midway between rostral and supralabial along nasal suture), small anterior supralabial with a width along lip equal to that of infranasal, large ocular with small eye or eyespot centrally placed in upper half, and moderate posterior supralabial. Frontal, supraoculars, and postfrontal subequal, forming a rather floral-like rosette pattern (as if cut from a single large median rounded shield). Supraoculars subpentagonal, anteriorly wedged between upper nasal and ocular, posteriorly wedged between frontal and postfrontal, both smaller than interparietal and interoccipital. Parietals transverse, larger than the occipitals (which are not fused, but usually fused elsewhere in the species range), in contact with the posterior supralabials. Temporal single. No mental, four infralabials.

Body covered with 14 rows of smooth, imbricate, subequal scales. Reduction to 10 rows takes place lateral to the subtriangular cloacal shield. Total middorsals 315–404; subcaudals 26–43.

Total length/diameter ratio 64–133; total length/tail ratio 10.0–15.7.

Dorsum unpigmented, pale reddish-brown or pink (in life) to beige or tan (in preservative), venter cream to white, but a specimen from Sodere, Ethiopia, has the subcaudals pigmented.

Size: Largest specimen ( NMK /O. 2661 — Porr Hill , Turkana, Kenya) 150 + 10 = 160 mm   .

Habitat. Sandy areas of dry savanna and semi-desert. At least parapatric with Leptotyphlops cairi   at the type locality and in the lower Nile Valley near Cairo, Egypt ( Baha el Din, 2006)   .

Distribution. Gambia (type of Glauconia natatrix Andersson   fide Wallach 2003), east through the Sahel and Sudanese savanna to the Horn of Africa, north to Turkey, south to Kenya and northern Tanzania, 0–1250 m ( Plate 5). The status of populations in West Africa, the Middle East, and Pakistan and northwest India remains be investigated.

Localities. SUDAN. Daragaia, N. Kordofan NMW 15458 View Materials ; Gabl el Meghahir (White Nile) BMNH 1900.9.22.23; Kosti (White Nile) BMNH 1914.8.17.10; Sennar ( Jan, 1860). ETHIOPIA. Sodere BH uncat. KENYA. No locality MVZ 200827; NMK/O. uncat.; NMZB 14881; 20 km N of Kimana ZFMK 41670; Nariokotome River, west Turkana NMK/O. 3014; Olorgesaille NMK/O. 2729; Porr Hill, east Turkana NMK/O. 2661; Sankuri MNHG 1561.87; Wajir CAS 146971; NHCL 1548. TANZANIA. NE side of Mount Meru CAS 89734 View Materials . SOMALIA. 10 km S of Bedawarak MCZ 74163 View Materials ; Bosaso NHCL 1800–02; Southern Somalia NHCL 1542.

NMK

National Museums of Kenya

Kingdom

Animalia

Phylum

Chordata

Class

Reptilia

Order

Squamata

Family

Leptotyphlopidae

Genus

Leptotyphlops

Loc

Leptotyphlops macrorhynchus (Jan & Sordelli)

Published, First 2007
2007
Loc

Glauconia fiechteri

Wallach, V. & Lanza, B. 2004: 85
2004
Loc

Leptotyphlops longicaudus, Hahn, 1980: 19

Lanza, B. 1990: 431
Lanza, B. 1983: 220
Hahn, D. E. 1980: 19
1980
Loc

Leptotyphlops cairi

Gans, C. & Laurent, R. F. 1965: 49
1965
Loc

Leptotyphlops macrorhynchus

Baha el Din, S. 2006: 221
Schatti, B. & Desvoignes, A. 1999: 78
Largen, M. J. 1997: 87
Schleich, H. H. & Kastle, W. & Kabisch, K. 1996: 475
Largen, M. J. & Rasmussen, J. B. 1993: 324
Leviton, A. E. & Anderson, S. C. & Adler, K. & Minton, S. A. 1992: 82
Meirte, D. 1992: 15
Gallagher, M. D. & Arnold, E. N. 1988: 411
Arnold, E. N. 1987: 253
Werner, Y. L. 1982: 156
Arnold, E. N. 1980: 314
Farag, A. A. & Banaja, A. A. 1980: 13
Hahn, D. E. 1978: 482
Villiers, A. 1975: 85
Lanza, B. 1972: 174
Corkill, N. L. & Cochrane, J. A. 1966: 496
Kramer, E. & Schnurrenberger, H. 1963: 477
Haas, G. 1959: 90
1959
Loc

Leptotyphlops macrorhynchus macrorhynchus

Schleich, H. H. & Kastle, W. & Kabisch, K. 1996: 477
Lanza, B. 1990: 431
Gasperetti, J. 1988: 200
Lanza, B. 1983: 220
Hahn, D. E. 1980: 20
Villiers, A. 1950: 56
1950
Loc

Glauconia macrorhynchus

Werner, F. 1917: 201
Boulenger, G. A. 1915: 643
Werner, F. 1907: 42
Boulenger, G. A. 1893: 61
Boulenger, G. A. 1890: 92
1890
Loc

Ramphostoma macrorhynchum

Jan, G. 1864: 39
Jan, G. 1863: 16
Jan, G. 1861: 190
1861